Question

If x, x-1, 2x+3 form an AP, then the value of x is:
a) -5
b) -6
c) -7​

Answer 1

In an A.P. the common difference remains the same.....

Thus, (x-1) - (x) = (2x+3) - (x-1)

=> -1 = x + 4

=> x = - 5

Answer 2

Answer:

In an A.P. the common difference remains the same.....

Thus, (x-1) - (x) = (2x+3) - (x-1)

=> -1 = x + 4

=> x = - 5